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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: SimpleFieldConverter.html 409 2014-08-18 16:46:48Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.gui;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import com.vaadin.data.util.converter.Converter;<a name="line.10"></a>
<span class="sourceLineNo">011</span><a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.util.Locale;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.core.FieldType;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>/**<a name="line.16"></a>
<span class="sourceLineNo">017</span> * Vaadin {@link Converter} for {@link FieldType}s to/from {@link String}.<a name="line.17"></a>
<span class="sourceLineNo">018</span> * Trims whitespace before converting from {@link String}.<a name="line.18"></a>
<span class="sourceLineNo">019</span> *<a name="line.19"></a>
<span class="sourceLineNo">020</span> * @param &lt;T&gt; field type<a name="line.20"></a>
<span class="sourceLineNo">021</span> */<a name="line.21"></a>
<span class="sourceLineNo">022</span>@SuppressWarnings("serial")<a name="line.22"></a>
<span class="sourceLineNo">023</span>public class SimpleFieldConverter&lt;T&gt; implements Converter&lt;String, T&gt; {<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>    private final FieldType&lt;T&gt; fieldType;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    public SimpleFieldConverter(FieldType&lt;T&gt; fieldType) {<a name="line.27"></a>
<span class="sourceLineNo">028</span>        if (fieldType == null)<a name="line.28"></a>
<span class="sourceLineNo">029</span>            throw new IllegalArgumentException("null fieldType");<a name="line.29"></a>
<span class="sourceLineNo">030</span>        this.fieldType = fieldType;<a name="line.30"></a>
<span class="sourceLineNo">031</span>    }<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>    public Class&lt;String&gt; getPresentationType() {<a name="line.33"></a>
<span class="sourceLineNo">034</span>        return String.class;<a name="line.34"></a>
<span class="sourceLineNo">035</span>    }<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>    @SuppressWarnings("unchecked")<a name="line.37"></a>
<span class="sourceLineNo">038</span>    public Class&lt;T&gt; getModelType() {<a name="line.38"></a>
<span class="sourceLineNo">039</span>        return (Class&lt;T&gt;)this.fieldType.getTypeToken().getRawType();<a name="line.39"></a>
<span class="sourceLineNo">040</span>    }<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span>    @Override<a name="line.42"></a>
<span class="sourceLineNo">043</span>    public String convertToPresentation(T value, Class&lt;? extends String&gt; targetType, Locale locale) {<a name="line.43"></a>
<span class="sourceLineNo">044</span>        if (value == null)<a name="line.44"></a>
<span class="sourceLineNo">045</span>            return null;<a name="line.45"></a>
<span class="sourceLineNo">046</span>        return this.fieldType.toString(value);<a name="line.46"></a>
<span class="sourceLineNo">047</span>    }<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>    @Override<a name="line.49"></a>
<span class="sourceLineNo">050</span>    public T convertToModel(String value, Class&lt;? extends T&gt; targetType, Locale locale) {<a name="line.50"></a>
<span class="sourceLineNo">051</span>        if (value == null)<a name="line.51"></a>
<span class="sourceLineNo">052</span>            return null;<a name="line.52"></a>
<span class="sourceLineNo">053</span>        try {<a name="line.53"></a>
<span class="sourceLineNo">054</span>            return this.fieldType.fromString(value.trim());<a name="line.54"></a>
<span class="sourceLineNo">055</span>        } catch (IllegalArgumentException e) {<a name="line.55"></a>
<span class="sourceLineNo">056</span>            throw new Converter.ConversionException("invalid value of type `" + this.fieldType + "': " + e.getMessage());<a name="line.56"></a>
<span class="sourceLineNo">057</span>        }<a name="line.57"></a>
<span class="sourceLineNo">058</span>    }<a name="line.58"></a>
<span class="sourceLineNo">059</span>}<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>




























































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